| Uncovering the septal Q wave and other electrocardiographic changes in pediatric patients with pre-excitation before and after ablation. | |
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MedLine Citation:
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PMID: 20102921 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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In patients with pre-excitation, a short PR interval and a delta wave are not always clearly seen, particularly if the pre-excitation is mild. Absent septal Q waves have been used as additional evidence suggestive of pre-excitation. The purpose of the present study was to determine the incidence of normalization of septal Q waves after successful ablation of a manifest accessory pathway in pediatric patients with normal hearts. We performed a retrospective review of electrocardiograms (ECGs) obtained before and after successful catheter ablation of a single manifest accessory pathway in patients <21 years old (84 pairs of ECGs). The ECGs obtained in patients before ablation for atrioventricular nodal re-entry tachycardia were used as controls (n = 62). The absence of Q waves in the lateral leads (V(5) to V(7)) and inferior leads (II, III, aVF) were determined. p Values <0.05 were considered significant. Before the ablation, 72 ECGs (85%) demonstrated absent Q waves in the lateral leads, and only 17 (20%) did not show evidence of Q waves after successful ablation of the accessory pathway (p <0.001). On the inferior leads, 37 ECGs (44%) showed no evidence of Q waves before ablation compared to 24 (29%) after ablation (p <0.05). The findings on the postablation ECG were not statistically different from the findings on the ECGs of the control patients. In conclusion, Q waves in the lateral and inferior leads are often absent in patients with manifest pre-excitation. Absent septal Q waves in the lateral and inferior leads frequently normalize after successful ablation of an accessory pathway. |
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Authors:
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Leonardo Liberman; Robert H Pass; Thomas J Starc; Allan J Hordof; Eric S Silver |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The American journal of cardiology Volume: 105 ISSN: 1879-1913 ISO Abbreviation: Am. J. Cardiol. Publication Date: 2010 Jan |
Date Detail:
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Created Date: 2010-01-27 Completed Date: 2010-02-25 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0207277 Medline TA: Am J Cardiol Country: United States |
Other Details:
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Languages: eng Pagination: 214-6 Citation Subset: AIM; IM |
Copyright Information:
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Copyright 2010 Elsevier Inc. All rights reserved. |
Affiliation:
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Pediatric Arrhythmia Service, Department of Pediatrics, New York-Presbyterian Morgan Stanley Children's Hospital, Columbia University Medical Center, New York, New York, USA. ll202@columbia.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Age Factors Atrioventricular Node / physiopathology Bundle of His / physiopathology Catheter Ablation* Child Cohort Studies Electrocardiography* Female Humans Male Pre-Excitation Syndromes / physiopathology*, surgery* Recovery of Function Retrospective Studies Treatment Outcome Young Adult |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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